function s1_hello() {
	echo " hello,world!"
}
s1_hello

function s2_tell_who_i_am() {
        echo "Enter you name:"
        read uer_name
        echo "uer name is $uer_name"
}
s2_tell_who_i_am

function s3_which_distro_do_i_use() {
	NAME="Beta Linux"
        echo $NAME
}
which_distro_do_i_use


function s4_view_my_cpu_arch() {
	uname -m
}
s4_view_my_cpu_arch()

function s5_show_first_scsi_disk_size() {
	lsblk -l | \grep disk | \grep '^sda ' |awk '{print $4}'
}
s5_show_first_scsi_disk_size

function_s6_show_main_memory_size_in_megabytes() {
	free -m |grep "Mem:" |awk '{print $2}'
}
s6_show_main_memory_size_in_megabytes
